.m-header{
  width: 100%;
  height: px2rem(54px);
  background-color: #fff;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  //border-top: 1px solid rgba(0, 0, 0, 0.1);
  font-size: px2rem(17px);
  color: #444;
  text-align: center;
  line-height: px2rem(54px);
}
